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Solar Keymark – Specific Scheme Rules Version 13.01 - January 2012

CEN CERTIFICATION Solar Keymark Network

04 January 2012 Jan Erik Nielsen

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Specific CEN Keymark Scheme Rules

for

Solar Thermal Products

SKN_N0106.R15




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Contents

SPECIFIC CEN KEYMARK SCHEME RULES 1

FOR 1

SOLAR THERMAL PRODUCTS 1

0. INTRODUCTION 5

1. DEFINITION OF SCOPE 5

1.1 Products covered by the scheme 5

1.2 List of European Standards concerned 6

2. REQUIREMENTS AND ASSESSMENT PROCEDURES FOR BODIES ENGAGED IN CERTIFICATION, TESTING AND INSPECTION 6

2.1 Requirements for certification, testing and inspection bodies 6

3. SPECIFICATION OF THE MANUFACTURER'S APPLICATION FILE 7

4. SELECTION AND SUBMISSION OF TYPE TEST SAMPLES 7

4.1 Selection 7 4.1.1 Remote Random Sampling procedure. 7

4.2 Collector “families” 8

4.3 Custom built collectors 8

4.4 System “families” 9

4.5 Submission 9

4.6 Changes in products – re-testing 9 4.6.1 Equivalent absorbers coatings 10 4.6.2 Equivalent collector glazing 11

4.6.3 Collectors 11

5. FACTORY PRODUCTION CONTROL AND INITIAL INSPECTION OF MANUFACTURING SITE 12




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6. SURVEILLANCE 13

6.1 Surveillance test 13

6.2 Special test 13

7. SUPERVISED MANUFACTURERS TESTING 15

8. LIST OF BODIES FOR THE IMPLEMENTATION OF THE SCHEME. 15

9. FEES 15

10. ADDITIONAL REQUIREMENTS FOR OBTAINING THE LICENSE 15

11. CHANGING CERTIFICATION BODY 15

12. SOLAR KEYMARK CERTIFICATION OF A SYSTEM WITH A COLLECTOR CERTIFIED BY ANOTHER CERTIFICATION BODY 15

13. CLARIFICATIONS ON SPECIFIC TESTING AND CERTIFICATION ISSUES 16

13.1 Solar Keymark certification of ICS systems 16

13.2 Negative pressure test of the collector 16

13.3 Nominal store volume 16

13.4 OEM certification 16

13.5 Hot water tapping times 16

13.6 Pre-ageing of solar collector test samples 17

Pre-ageing of solar collector test samples 17

14. LABELS AND LOGO 17

14.1 Display of Solar Keymark licence number on collector 17

14.2 Labelling of systems 17

15. OTHERS 18

15.1 Mandatory identification of the manufacture 18

15.2 Translation of Solar Keymark documents 18




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16. UPDATING SOLAR KEYMARK SCHEME RULES 18

17. UPDATING SOLAR KEYMARK DATABASE 18

18. REFERENCES 18

ANNEX A. SOLAR KEYMARK SURVEILLANCE TEST & SOLAR KEYMARK FACTORY INSPECTION REPORT 20

ANNEX B1. SOLAR KEYMARK COLLECTOR DATA SHEET 21

ANNEX B2. SOLAR KEYMARK SYSTEM DATA SHEET 21

ANNEX C. FEES FOR THE SOLAR KEYMARK NETWORK 22

ANNEX D. SOLAR KEYMARK SYSTEM FAMILIES 23




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0. Introduction

These Specific CEN Keymark1 Scheme Rules for Solar Thermal Products are acting as a

supplement to the CEN/CENELEC INTERNAL REGULATIONS –PART 4:

CERTIFICATION – 2006 [1] and CEN INTERNAL REGULATIONS - Part 3 TERMS OF

REFERENCE OF THE CEN CERTIFICATION BOARD, 2006-9 [4].

Together these specific and general rules give the complete set of requirements for

―Keymarking‖ solar thermal products covered by EN 12975, EN 12976 and EN 12977-3.

Therefore, in order to get the Solar Keymark one shall follow both the general rules and

these specific rules.

The basic elements/requirements of the scheme are:

A quality system (i.e. product related factory production control) covering the

production line based on the EN ISO 9000 series of standards

Third party initial inspection of the manufacturing site (and especially the quality

system management)

Third party initial type testing sampled by independent body

Third party periodic surveillance (i.e. periodic inspection)

The specific scheme rules are made in order to make the scheme operational for the

involved parties. They are kept as close as possible to the minimum requirements for

Keymark Scheme Rules as given in 4.2 of [1].

Be sure always to have the latest version of these scheme rules, available at

www.solarkeymark.org.

1. Definition of scope

1.1 Products covered by the scheme

The scheme covers the following product main types within the work programme of

CEN/TC 312 for thermal solar systems and components:

Solar thermal collectors as defined in EN 12975

Factory made solar thermal systems as defined in EN 12976

Solar water heater stores as defined in EN 12977-3

1 The Keymark is a third-party certification system on the basis of European Standards,

demonstrating to users and consumers conformity to the requirements of the relevant

European Standard(s). It is granted after the satisfactory completion of a certification

procedure, comprising product conformity tests (initial type tests), assessment of the

documented factory production control for the related production line, production site

inspection and surveillance.

http://www.solarkeymark.org/




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Collectors with different characteristics are considered as subtypes.

Systems with different characteristics are considered as subtypes.

Solar water heater stores with different characteristics are considered as subtypes.

1.2 List of European Standards concerned

The scheme refers to the normative requirements in the following European Standards:

EN 12975: Thermal solar systems and components - Solar collectors

EN 12976: Thermal solar systems and components - Factory made systems

EN 12977-3: Thermal solar systems and components - Custom built systems — Part

3: Performance test methods for solar water heater stores

The scheme also refers to the procedure for calculating the output of a solar water heating

system given in:

EN 15316-4-3: Heating systems in buildings – Method for calculation of system

energy requirements and system efficiencies – Part 4-3: Heat generation systems,

thermal solar systems.

The standards are available from the national standardisation bodies (list of standards

available see: http://www.cen.eu/esearch/).

2. Requirements and assessment procedures for bodies engaged in certification, testing and inspection

2.1 Requirements for certification, testing and inspection bodies

The general requirements are given in [1], part 4.1.5:

―Bodies engaged in certification, testing and inspection shall fulfil the requirements of the

relevant standards for their operation, e.g. EN 45000 series and EN ISO/IEC 17000 series

of standards, as well as the additional requirements defined in the Keymark scheme rules...‖

The additional requirements/rules in this specific scheme are:

The certification body in agreement with the manufacturer (license applicant)

employs any of the approved testing laboratories fulfilling the requirements in this

scheme and listed in paragraph 8 ―List of bodies for the implementation of the

scheme‖.

Evaluation of testing laboratories by the certification body is not an alternative to

accreditation.

Certification bodies, testing laboratories and inspection bodies shall participate

actively in the Solar Keymark Network, i.e. participate the in meetings relevant for

their activities in Solar Keymark certification, testing and inspection.

Certification bodies shall make test results public available in the harmonised

format agreed upon by the Solar Keymark Network – See Annex B. Updated lists of




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certified products shall be sent to the Secretariat of the Solar Keymark Network

each month.

Inspection bodies shall use the harmonised inspection procedure and checklist

agreed upon by the Solar Keymark Network – Annex A.

Certification bodies shall collect a fee for each license issued to be transferred to the

Secretariat of the Solar Keymark Network. Transfer shall take place within twelve

months from the date of issuing the licence. The fee for the Solar Keymark Network

is given in Annex C.

3. Specification of the manufacturer's application file

The manufacturer and/or applicant shall supply the certification body with the information

as required in the application form of the certification body. The application form is

available from the certification body.

This information must also include the documentation required in:

paragraph 7. ―Collector identification‖ of EN 12975-1

paragraph 4.6 ―Documentation‖ of EN 12976-1

paragraph 9.2 ―Description of the store‖ of EN 12977-3

4. Selection and submission of type test samples

4.1 Selection

The selection of products for initial type testing is made under the responsibility of the

certification body. The test samples for initial type testing are taken out of the current

production or from the stock of the manufacturer. The inspector points out the test samples

and records their serial numbers. The manufacturer shall prove through his factory

production control and quality management system conformity of the test sample with the

series production.

A series production is existing when a least 10 collectors are produced with the same

materials and the same manufacturing technologies in the same way and all major

production processes are performed in presence of the inspector.

At least 10 collectors of the same type more than the number of test samples picked must

be available in the stock for picking the sample(s) to be tested.

SKN decision D4.M6.

4.1.1 Remote Random Sampling procedure.

The following remote sampling procedures can be used:

Internationally operating inspection companies.

Videosampling

Photosampling

Detailed procedures and requirements are given in document SKN_N0126R1.

Example of: ―Instructions for Completing Random Selection via Photographs is given in

SKN_N0127R0 can be performed for picking samples for Solar Keymark type testing.

SKN decision D13.M8.




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4.2 Collector “families”

If the manufacturer produces the ―same‖ collector in different lengths and/or widths (i.e.

the only difference between two collectors is the length and/or the width) the collector is

considered the same subtype (within the same collector ―family‖). In this case only one

sample of the smallest and one sample of the largest module shall be taken and tested2. The

largest module shall be subject to all the tests required in EN 12975-1 clause 5.2, and the

smallest shall be subject to a thermal performance test (clause 6 of EN 12975-2)3. The

performance figures used for this type shall be the performance figures corresponding to

the measured instantaneous efficiency having the lowest integral in the interval of the

reduced temperature4 from 0 – 0.1 K/(W/m²). In other words, the efficiency curve used for

this subtype shall be the one embracing the smallest area.

Durability and reliability tests shall be carried out on collectors representing the major

features of the collector family. E.g. collector families with collectors having several glass

covers separated by bars. If the largest size of the collector - the test laboratory can test - is

smaller than the smallest size of the family representing the weakest point - another testing

laboratory shall carry out the respective tests - SKN decision D2.M6.

4.3 Custom built collectors

Custom built collectors (built in, roof integrated collectors that do not comprise factory

made modules and are assembled directly on the place of installation) are handled as

described in EN 12975-1, paragraph 1”…a module with the same structure as the ready

collector is tested. The module gross area in the case of custom built collectors shall be at

least 2 m²”. The manufacturer has to explain the conformity of the test module with the

normal production and must provide a detailed description of the components. Very large

collector modules may be treated as the custom built ones, see above, if testing of the full

size module is not possible.

2 The module sizes are compared based on aperture area. Aperture area is defined in

EN/ISO 9488. The inspector shall inspect all the different sizes of the type to verify

conformity. 3 The definition of the biggest collector and the smallest collector is done at the initial test.

If later a bigger size or smaller size is added to the collector family this is resulting in a new

definition for the existing family. If there is a new biggest collector added this will require

performance testing and reliability testing of this collector. If there is a new smallest

collector added this will require performance testing on the smallest collector - SKN

decision D3.M8. 4 The reduced temperature is defined in EN 12975-2, paragraph 6.1.4.8.3, and the

instantaneous efficiency in 6.1.4.8.4.2.




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4.4 System “families”

If the manufacturer produces the ―same‖ system in different sizes, the different sizes of the

system is considered being the same subtype (within the same system ―family‖). Detailed

requirements for systems to be of the same subtype are given in Annex D.

Testing requirements for systems of the same subtype are:

High temperature and safety tests (according to EN 12976) shall be performed on

the sub system having the highest collector area to store volume ratio.

All other tests (according to EN 12976 and including performance test) shall be

performed on the ―medium‖ sub system. Detailed testing requirements are given in

Annex D.

Performance indicators for the system configurations which are not performance tested can

be determined based on the performance test result on the ―medium‖ system configuration

according to the procedures described in Annex D.

4.5 Submission

The inspector either takes with him the test samples and delivers them to the testing

laboratory, or he marks them with a permanent mark (alternatively seals their packing) and

instructs the manufacturer to deliver them to the testing laboratory.

4.6 Changes in products – re-testing

The Keymark licence is not valid if a keymarked product is changed/modified. However,

depending on the modifications, it might not be necessary to carry out a complete new

initial type test. In order to keep the license, the manufacturer shall supply the certification

body with a revised ―manufacturers application file‖ noting that the product is a

modification of an already keymarked product (specifying exactly which one) and

specifying exactly which modification(s) will be made. The certification body will then

assess the necessity of re-tests/supplementary tests on the basis of table C.1 in Annex C of

EN 12975-1 (collectors) and table A.3 in Annex A of EN 12976-1 (systems) and taking

into account decisions made at Solar Keymark Network meetings5. Depending on the

degree of changes in the production process, the certification body will evaluate if a new

initial inspection of the production line is needed. If the certification body approves the new

tests (and inspection), the manufacturer may mark the modified product.

Note: The fees for the modified product are the same as for a new product, but some

expenses for testing and inspection might be saved. The manufacturer may keep the license

for the original product.

Note: If the changes are only changes in sub-components/materials a new initial inspection

should not be necessary.

5 An updated list of decisions from the Solar Keymark Network meetings is available from

the www.solarkeymark.org. Included here are decisions made on those specific collector

and system sub-components which can be interchanged without retesting.





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4.6.1 Equivalent absorbers coatings

Different coatings are considered as equivalent provided that

1. They are applied on the same substrate (e.g. copper, aluminium)

and

2. The specific test procedure described below has been passed successfully

and

3. The equality is accepted by the Solar Keymark Network

Procedure (March 2011)

If a coating is to be considered equivalent to other coatings then the following tests shall be

passed and requirements shall be fulfilled:

1. Two identical collectors (apart from the absorber coating) are compared to verify

the equality of the two coatings. The absorbers of the two collectors must be made

of the same material and must have the same thickness. One of the collectors is

coated with one of the reference coatings. The other collector is coated with the

new coating.

2. The durability and reliability tests according to EN 12975-2 (being relevant with

regard to the absorber, thus 5.3 High Temperature Resistance, 5.4 Exposure and 5.6

Internal Shock) for the collector with the new coating performed by an EN12975

accredited test lab are successfully passed.

3. The power curves determined by an accredited test lab for the two collectors with

different coatings shall not differ by more than 2% at a temperature difference of 0

K and not more than 2% at a temperature difference of 50 K

The absorptance and emittance of the different coatings under question shall have -

according to the specifications of the manufacturer - equivalent optical properties

(alpha1 = alpha2 1%point at most, epsilon1 = epsilon2 1%point at most) and

the same range of the production variability, e.g. 0.95 2%.

4. For selective absorber coatings on metal, a IEA SHC Task X test shall be performed

successfully

5. The interchange ability is accepted by the Solar Keymark Network

The equivalency of the absorber coating can be challenged anytime. In this case the

absorber has to be sampled by an accredited third party or by the test lab. The costs for the

whole procedure are fully carried by the challenger. Upon presentation of tests that suggest

none-equivalency of a absorber coating, the SKN is obliged to request the re-evaluation of

a absorber coating the latest until the forthcoming SKN meeting. The absorber has to be

sampled by a third party.

NB. Updated rules and procedures for exchanges of absorber coatings and updated list of

absorber coatings which can be exchanged is found in latest version of SKN_N0137, public

available from www.solarkeymark.org.

SKN decision D1.M5 & D5.M6 & D9.M7 &D6.M8




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4.6.2 Equivalent collector glazing

Procedure (March 2011)

Collector glazing can be considered as equivalent if the following requirements are

fulfilled:

The solar transmission (AM 1,5) does not differ by more than 1% from the one of the

glass used for the initial Solar Keymark collector test, provided that material (including

tempered/non tempered), texture, surface treatment and thickness of the glass did not

change. The change in transmission must be documented with a transmission

measurement made by one of the Solar Keymark test labs or by labs accredited for

transmission measurements.

and

If the glass is toughened, no additional mechanical load test is required. For other

materials, a collector must be sampled according to the rules of Solar Keymark. This

collector has to pass the mechanical load test according to EN 12975-2 chapter 5.8

made by one of the Solar Keymark test labs.

and

The impact resistance test according EN12975-2, chapter 5.9 has been passed

successfully with at least the same result as in the initial test (only if the impact

resistance test was performed during the initial test). The tests must be carried out by a

Solar Keymark test lab.

NB. Updated rules and procedures for exchanges of collector glazing and updated list of

glasses which can be exchanged is found in latest version of SKN_N0138, public available

from www.solarkeymark.org.

SKN decision D7.M7

4.6.3 Collectors

A collector in a Solar Keymark certified system can be changed under the following

conditions:

The original test report of the tested system configuration remains the reference for

all kinds of modifications, even if a modification was accepted without retest. The

procedure for an advice of amendment follows the four topics:

The manufacturer informs the Certification Body about the planned change of

collector type.

The manufacturer delivers the test reports and Solar Keymark data sheets of both

collectors and the system to the Certification Body.

Both the Certification Body and the test lab which has issued the system test report

have to approve the system modification.

A negative decision can also be based on technical consideration out of the following few

requirements.

Minimum requirements on the collector:

The alternative collector is Solar Keymark certified.

The original collector must be performance tested according to EN 12975




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The test reports of both collectors and the system are available to the Certification

Body

The change of the collector does not cause a change of the system configuration e.g.

piping, inlet connections, controller, pump etc.

Both collectors have to be ―technical identical‖

Definition of ―technical identical‖ Collector‖ (Data based on test report)

Tolerance of gross area ± 10 %

IAM (50°) ± 3 %

The pressure drop shall not differ by more than ± 10 % for the nominal flow rate as

stated by the manufacture

Total performance of the collector at 1000 W/m2:

Integral from 0 to 100 °C, tolerance of 0 to 10 % (new collector being better than

original)

Wpeak ± 10 %, (Peak Power [G = 1000 W/m2] per collector unit)

No modifications allowed at:

Hydraulic flow type

Maximal operating pressure

Permitted heat transfer fluid

Reporting

The original test report of the tested system remains the reference for all kinds of

modifications – cascading modifications are excluded. The original test report

remains unchanged and valid. The use of alternative collectors is briefly reported as

an addendum to the original test report.

SKN decision D6.M7.

5. Factory production control and initial inspection of manufacturing site

With the initial inspection it is checked whether the manufacturing site fulfils the

requirements stated in 4.1.3 in [1]:

―The manufacturer shall operate a quality system covering the production line of the

product for which the licence to use the Keymark is granted and which should be based on

the quality standards which are at least of the level of the EN ISO 9000 series of standards.

In granting the licence, the empowered certification body shall take into account the

existence of any quality system certificate issued by a certification body that is accredited

by a member of the European co-operation for Accreditation (EA).‖

The quality management system shall cover the production line according to inspectors

criteria.

The inspection procedure and checklist given in Annex A1 shall be used.




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In case the manufacturer is ISO 9001 certified by a certifier accredited by a national

accreditation body being a member of IAF (International Accreditation Forum)

(www.iaf.nu) a Solar Keymark factory inspection is only required every second year

provided the ISO 9001 report is made available to the certifier.

Based on conclusions of previous audits, interim inspections can be requested by the

certifier.


6. Surveillance

The general surveillance procedures are given in 4.1.4 of [1]:

―Periodic surveillance by the empowered certification body including testing of samples

from the production line or from the market and surveillance of the manufacturer's quality

system.‖

and A.1.6.3 of [4]:

“The factory inspections/assessments shall include the checking of the documentation of

the related FPC at least once a year, as well as selecting samples for tests at least every

second year …”

6.1 Surveillance test

The surveillance test is a detailed physical inspection of the product and a comparison with

the specifications of the original type tested sample. The procedure for the detailed physical

inspection given in Annex A shall be used. The surveillance test shall be done at least every

second year. The test samples for surveillance testing are taken out of the current

production or from the stock of the manufacturer. The inspector points out the test samples

and records their serial numbers. See also section 4.1.

Latest version (available from www.solarkeymark.org) of the special documents listed

below shall be used for the surveillance test reports:

SKN_N0122R0: Checks and controls for solar collectors

SKN_N0123R0: Checks and controls made of the solar heating system

SKN decision D9.M8

6.2 Special test

Complaints concerning the conformity of a certified product are handled according to [1]

section 5.4 (Complaints) and section 5.5 (Appeal procedures).

In this connection a special test can be ordered through the certification body by anyone, if

the fulfilment of the requirements of the certification program or the registered values of a

certified product is doubted.

The special test is normally to be made as a type test and in agreement with the

manufacturer by a second approved testing laboratory listed in paragraph 8. If only one or a





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few points of the certification program are challenged, the certification body decides after

consulting the testing laboratory if the special test can be made as a partial or

supplementary test.

If the tested product does not fulfil the requirements and/or does not comply with the

registered values6, the legal person holding the Keymark licence of the product in question

has to carry the costs of the special test.

If the tested product fulfils the requirements and complies with the registered values, the

costs have to be carried by the party which questioned the fulfilment of the requirements or

registered values and ordered the test through the certification body.

If the special test shows that the failure of the product to conform to the requirements

and/or registered values is due to random manufacturing error or transport damage, the

testing laboratory has to take a second sample. The result of this test is the obliging result

for the special test.

The legal person holding the Keymark licence or a person authorised by the legal person

holding the Keymark licence must have the opportunity to take part during the whole

procedure of the special test. He must be informed of the results of the test without delay to

have the chance to react directly.

If the special test states deviations from the requirements and/or the registered values, the

certification body requires the legal person holding the Keymark licence to rectify the faults

within a certain limited time which should not exceed one month, depending on the extent

and manner of the fabrication. Thereafter the testing laboratory performs a new special test,

the extent and manner being determined by the certification body consulting the testing

laboratory.

6

Collectors: The integral of the measured instantaneous efficiency at the special test shall be more

than 90% of the already registered integral in the interval of the reduced temperature from 0 –

0,1 K/(W/m²). The reduced temperature is defined in EN 12975-2, paragraph 6.1.4.8.3, and the

instantaneous efficiency in 6.1.4.8.4.2.

Systems:

Solar-plus-supplementary systems: The calculated Qaux,net based on the special test shall be

less than 110% of the originally calculated Qaux,net. Qaux,net is defined in EN 12976-2,

paragraph 5.9.3.2. The calculations to be compared shall be based on the Würzburg climate

data and the design load already given by the manufacturer (see: EN 12976-2, Annex B, table

B.1).

Solar-only and solar preheat systems: The calculated fsol based on the special test shall be

more than 90% of the originally calculated fsol. fsol is defined in EN 12976-2, paragraph

5.9.3.3. The calculations to be compared shall be based on the Würzburg climate data and the

design load already given by the manufacturer (see EN 12976-2 Annex B, table B.1).




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7. Supervised manufacturers testing

Procedures such as "supervised manufacturers’ type testing" and/or "type testing at

manufacturers' premises" are not included in these scheme rules.

Note: At the moment no manufacturer is doing the type testing itself. In the future it might

be taken into consideration to specify the rules for such an option

8. List of bodies for the implementation of the scheme.

An updated list of empowered certification bodies and approved inspection bodies and

testing laboratories is available at the Solar Keymark web site: www.solarkeymark.org.

9. Fees

By applying for the licence to use the Keymark, the manufacturer also agrees to meet:

1. the costs specified in [1]

2. the fees for the Solar Keymark Network specified in ANNEX C. These fees are not

set and regulated by CEN but by the Solar Keymark network.

10. Additional requirements for obtaining the license

Some large solar collectors have to be CE-marked, further information at:

http://www.solarkeymark.org

11. Changing certification body

Procedures for changing the certification body

It shall be possible for a licensee to obtain a new license from another certification

body without re-testing and re-inspection

Old license shall be withdrawn when new one is issued

Change of license should be done within 3 months after the request

The test report(s) and the inspection report(s) have to be provided to the ―new‖

certifier

The test institute that issued the test reports has to be accepted by the ―new‖ certifier

SKN decision D1.M3.

12. Solar Keymark certification of a system with a collector certified by another certification body

It is no required that a system and the components in the system are Keymark certified by

the same certification body. In general a certifier has to perform Solar Keymark system

certification based on collector Solar Keymark certificates issued by another certification

body.






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The manufacturer is obliged to inform the certification body certifying his system about

any changes related to the certification of the collector used in the system - including if the

collector certificate is cancelled7.

SKN decision D4.M8.

13. Clarifications on specific testing and certification issues

13.1 Solar Keymark certification of ICS systems

Solar Keymark certification of ICS systems is possible.

SKN decision D5.M3.

13.2 Negative pressure test of the collector

“Negative pressure test of the collector” according to 5.9.2 EN 12975-2:2006 does not

have to be performed on tubular collectors due to the following reason: The negative

pressure test is intended to assess the extent to which the fixings between the collector

cover and collector box are able to resist uplift forces caused by the wind. This is not

relevant for tubular collectors.

There shall be a remark on the Solar Keymark certificate in case the negative pressure test

was not performed as long as the pressure test is still mandatory according to the standard.

SKN decision D6.M3.

13.3 Nominal store volume

The nominal store volume stated on the system identification label shall not differ by

more than 10 % from the effective store volume determined from the measured thermal

capacity. The calculation of the percentage of the difference between the two volumes is

based on the value of the effective volume. The effective store volume shall be mentioned

in the test report.

SKN decision D2.M5.

13.4 OEM certification

OEM certificates shall be issued by the certifier who issued the original certificate.

SKN decision D3.M5

13.5 Hot water tapping times

Hot water tapping times

Following taping times should be used for the performance prediction:

7 According to the existing rules the manufacturer is required to inform, in addition to the

certifier of the collector, also the certifier of the system about any changes related to the

collector. In order to be sure that the manufacturer informs the certifier of the system about

a withdrawal of the certificate for the collector, it is recommended to state the obligation

clearly in the contract between the certifier of the system and the manufacturer.




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Note: Time given in Table 1 are decimal figures. SKN decision D5.M8.

13.6 Pre-ageing of solar collector test samples

Pre-ageing of solar collector test samples

Before performing a rain penetration test the solar thermal product should be pre-

aged to at least the following extent by using either possibility 1 or possibility 2:

Possibility 1:

o Expose the product at least for 15 valid days (according to the validity

criteria of EN 12975, 5.4).

Possibility 2:

o Two stagnation tests using a solar simulator providing at least 850 W/m² and

10°C ambient temperature with a duration of irradiance of at least 4h. In

between this two stagnation tests the collector has to reach approximately

ambient temperature.

o Exposure to outdoor conditions for at least 15 days, not requiring any

boundary conditions to be fulfilled.

o Two stagnation tests using a solar simulator providing at least 850 W/m² and

10°C ambient temperature with a duration of irradiance of at least 4h. In

between this two stagnation tests the collector has to reach approximately

ambient temperature.

SKN Decision D8.M10.

14. Labels and logo

14.1 Display of Solar Keymark licence number on collector

Display of Solar Keymark licence number on collector

For new Solar Keymark certificates issued from 01. May 2010 onwards it is only allowed

to display the Solar Keymark logo on the collector together with the Solar Keymark licence

number.

For Solar Keymark certificates issued before 01. May 2010 it is required to display the

Solar Keymark licence number together with the Solar Keymark logo (in case the logo is

displayed) from 01.May 2011 onwards on the collectors.

SKN decision D7.M8.

14.2 Labelling of systems

The requirement stated in EN 12976-1:2006, clause 4.7 ―Every system shall have the

following information durably marked on a plate or label to be visible at installation‖ can

be considered as fulfilled if:

the label is included in the documentation supplied with the system




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and

in the documentation it is stated that the label (or corresponding page of the

documentation with the label) has to be placed at the systems or the site where the

system is installed

and

an appropriate way for providing a durable fixing and display of the label is provided

The requirement mentioned above is relevant for the system label required according to EN

12976-1:2006, clause 4.7 and for the Solar Keymark system label.

SKN decision D3.M9.

15. Others

15.1 Mandatory identification of the manufacture

For collectors as the name of the manufacturer also the name of the supplier of the collector

can be mentioned.


15.2 Translation of Solar Keymark documents

Certification bodies or test institutes can translate documents such as e.g. factory inspection

reports or data sheets in other languages provided that always the original English text

remain in the document.

This means that the preparation of a document using any language and English is possible.

In case of doubts, contradictions etc. the English text is the relevant one.


16. Updating Solar Keymark scheme rules

The Solar Keymark scheme rules should be updated once every year taking into account

the decisions made in the meantime. Since the decisions are already agreed on by the Solar

Keymark Network, no extra voting on the accordingly updated Solar Keymark scheme

rules is required.

SKN decision D1.M9.

17. Updating Solar Keymark database

The certification bodies shall inform the Solar Keymark secretariat every two weeks about

the Solar Keymark certificates issued and withdrawn for updating the Solar Keymark

database every two weeks.

SKN decision D4.M9.

18. References

CEN/CENELEC INTERNAL REGULATIONS – Part 4: Certification – 2006

EN ISO/IEC 17025, General requirements for the competence of testing and calibration

laboratories

EN 45011, General criteria for certification bodies operating product certification




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[4] CEN INTERNAL REGULATIONS - PART 3 TERMS OF REFERENCE OF THE

CEN CERTIFICATION BOARD, 2006-9

How to get the references:

[1] and [4] is available from CEN (www.ce.eu) and the Solar Keymark web site

(www.solarkeymark.org).

[2] and [3] and the referenced standards (see section 1.2) are available from the national

standardisation bodies.

http://www.ce.eu/





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ANNEX A. SOLAR KEYMARK SURVEILLANCE TEST & SOLAR KEYMARK FACTORY INSPECTION REPORT

Normative annex.

Get updated version from:

http://www.estif.org/solarkeymark/schemerules.php

Empowered certification body





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ANNEX B1. SOLAR KEYMARK COLLECTOR DATA SHEET

Normative annex.




ANNEX B2. SOLAR KEYMARK SYSTEM DATA SHEET

Normative annex.









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ANNEX C. FEES FOR THE SOLAR KEYMARK NETWORK

Normative annex.








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ANNEX D. SOLAR KEYMARK SYSTEM FAMILIES

Normative annex.





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